A misconceived word, as
Poland was never officially a part of Soviet Union, and thus was named '
People's Republic of
Poland', during the communist reign. Oh, and even if, it would have been 'Polish SSR'.
- Do you know when the
Poland SSR ceased to exist?
-
Poland what? Oh, you must mean the
People's Republic of Poland! It officially fell on 31 December, 1989.